1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5eb5ce86c63eb2010664fccf610908a35d6cfafa04b89492ff861162e89498c. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2d7da35-24d4-4c2f-a415-7dd3bad9f5ce.json and https://artists.proofprofile.net/proofs/artist/f2d7da35-24d4-4c2f-a415-7dd3bad9f5ce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28469f07f9f101b5cdb50993d4aa1586a2229dec286403dc450b797ec7d71142. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:38:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWC010103520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d57f79d9458c9e53348347f30daf3f5196beffd9862879372251d97c39eb23. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWC010503650.
Scent of a Morning(piano Solo) 清晨的芬芳(鋼琴版)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937e3cf71ffba3e906adc13410532e27a2156f49373f73459a3414a8efc60ef1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWC010503790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d1654b1bd4ddbacae98735bd053d9dc8c43a7269a31653b3ea5433df03c7ec. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:20:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWC010903280.
The Best Of Daydream - Sentimental Dream
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41fcb1d012279e9ef3b884c3620a7e6072874ca2374d8511d041960215feff69. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:58:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWC011005381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8100e8fc5ff7f76e122ffcece3a82a25549108215206417ccce9b46a7b55b323. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWC011206191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31e0bf5ed88b4b1a42ba72ff13c95edd51512c3f4ac38d95b5fa05a2fb9bc47. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:50:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA341655507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02dc67a7b54c438fa7197455a891736f378e9fa1d6f8d48e1e31f8bfdea892e. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA341655508.